Power BI Service APIs

[Anonymous]

Hi All, 

Just having a look at Power BI service APIs available at: https://docs.microsoft.com/en-us/rest/api/power-bi/

I was thinking about setting up a Power BI report to consolidate information about users, groups, permissions etc into a single report - do I have to 'register an app' to be able to use Power BI service apis within Power BI? If so, does anyone have a brief tutorial about using Power BI apis within Power BI itself?

Thanks, 

pbix